The primary purpose of the Tinnitus Retraining Therapy Trial (TRTT) is to assess the efficacy of tinnitus retraining therapy (TRT) as a treatment for severe debilitating tinnitus. TRT is a non-medical intervention that uses directive counseling (DC) and sound therapy (ST)to habituate the patient's associated negative emotional reactions to tinnitus, its perception, and ultimately, its impact on the patient's life.

It is just cos it said that it would run until either feb or march 2015 (i forgot which month) so i thought that maybe there may be some results by now....
thanks @Markku guess it is not finishing now then as it originally said it was if they are still recruiting....